Oil pan



FIG. 1 is a perspective view of an oil pan showing my new design;

FIG. 2 is a bottom view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a front elevational view of the present invention;

FIG. 5 is a rear elevational view of the present invention;

FIG. 6 is a right side elevational view of the present invention; and,

FIG. 7 is a left side elevational view of the present invention.

The broken line showing in FIGS. 1-7 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an oil pan, as shown and described. 